DnsOptions.StaleDnsOptions.Builder

Sets whether to return results originating from other networks or not. Normally, Cronet clears the DNS cache entirely when switching connections, e.g. between two Wi-Fi networks or from Wi-Fi to 4G.

Creates and returns the final DnsOptions.StaleDnsOptions instance, based on the values in this builder.

Same as setFreshLookupTimeoutMillis(long) but using Duration.

Sets how long (in milliseconds) to wait for a DNS request to return before using a stale result instead. If set to zero, returns stale results instantly but continues the DNS request in the background to update the cache.

Sets how long (in milliseconds) past expiration to consider using expired results. Setting the value to zero means expired records can be used indefinitely.

Same as setMaxExpiredDelayMillis(long) but using Duration.

Sets whether to allow use of stale DNS results when network resolver fails to resolve the hostname.

Depending on the use case, if Cronet quickly sees a fresh failure, it may be desirable to use the failure as it is technically the fresher result, and we had such a fresh result quickly; or, prefer having any result (even if stale) to use over having a failure.